Pulling implement



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Dec. 20, 1955 L. HAUBERT PULLING IMPLEMENT 2 Sheets-Sheet 1 Filed Aug.14, 1953 [e0 Haueri' Dec. 20, 1955 L. HAUBERT 2,727,717

PULLING IMPLEMENT Filed Aug. 14, 1953 2 Sheets-Sheet 2 IN VEN TOR.

Z 60 H auberl United States Patent This invention relates topullingimpl'ements and in' general aims to provide improvements-in theconstruction of the pulling implement disclosed" in my Patent No.2,639,890 dated May 26, 1953, to which reference should be made.

The principal objects of the present invention are:

(1) To provide an attachment for lift jacks which forms the base andsupport for the lift jack and cooperates therewith to formapullingimplementor tool;

(2 To provide a pulling implement or. tool wherein a lift jack is usedwhich can be operatedin several positions;

(3) To provide a chain pulling implement which will permit closeadjustment of the chain to be pulled;

(4) To provide a chain-holding. pin that cannot accidentally disengage;

(5) Toprovide a pulling implement wherein the pulling chain is guidedthrough a chain guide, or around a chain sheave, or may operate outsideof the chain guide or chain sheave.

To those skilled in the art, other objects of the invention will beunderstood from the following. description of several forms of theattachment, taken in connection with the accompanying. drawings formingapart of this specification.

In the accompanyingdrawings- Fig. l is a sideelevation of an assemblyconsisting of a conventional lift jack and an attachmentfor the base ofthe lift jack, said attachment embodying theinvention;

Fig. 2 is a top plan view'of the base attachment per se omittingpartofthe chain which secures the locking pin;

Fig. 3 is a longitudinal vertical section through the base attachment ofFig. 2;

Fig. 4 is atop plan view ofav different form of base attachment;

Fig. 5 is aside elevation of the base attachment of Fig. 4;

Fig. 6 is a fragmentary side elevation showing another form of baseattachment adaptedto mount' twochain sheaves for two chains, only onesheave however being shown; and

Fig. 7 is a section on-line- 7-7 of-Fig. 3.

Referring particularlyto-the draw-ings;.and first to Figs. 1, 2 and 3, alift jack 10 (whichisrepresentative of any portable lift jack) has itslower end received in a socket 11 provided on the-upper face of amassive base member 12 which is so designed as to provide astablesupport for the jack. Base member 12,. it will be understood, takes theplace of the usual footor base which is normally an integral part ofthe-jack, the latter being modified to this extent, If preferred, thejack need not be modified at all as its foot or. base may fit= upon aseat designed to receive it: and provided on' top of b'a'sermen ber 12,as is disclosed in my Patent No: 216 391890. Jack 10 has the usualtoothed rack b'ar 13; rac'li bar head" 14, a: pivoted handle socket 1 5;a handle or lever 2. 16 (only part of which is shown), fitting in socket15, a trip latch 17, and a rack bar the lift 18. It will be clear thatif the trip latch 17 is in the proper position, vertical oscillation oflever 16 will cause the rack bar 13 and the toe lift 18 to rise onet'ooth at a time, while reversing the position of the triplatch willrelease a pawl (not shown) and permit the rack bar to descend in thejack housing 19. In lieu of such a lift jack, other types of lift jacksmay be employedwith the attachment of the invention with equaly goodresults, as will be clear from the description to follow. A bore orbores 20 are preferably provided-in the walls ofsocket 11 to permit' aset screw or screws 21 to be passed through said bore to contact thelowerend-of lift jack 10 when it is in socket 11, thereby to lock thelift jack upon base member 12; or a bolt may be passed through the jackand socket to secure these parts together, as will be understood withoutillustration; or the jack-locking means of the aforesaid patentmay beused-to hold the jack immovably upon the base, yet permit. separation ofthe parts whenever desired. The lower end of the lift jack housing 19 issquare and is received in a square socket 11 (Fig. 2); this constructionand arrangement of parts permits the lift jack to be operatedin theposition shown, or to be turned about its axis or relative to the basemember 12 and still fit the socket. The socket is deep enough to preventtilting- 0f the jack.

In lieu of a liftjack of the type employing a-stationary housing, likehousing 19, and-atraveling rack bar, like rack bar 13;, the inventionmay be employed withthe type of pulling implement which is in commercialuse for straightening utility poles and which includes a stationary rackbar along which a housing travels tooth-bytooth as the lever isoscillated.

Secured to the base 12iby'means ofa-chain 25is a chainlocking pin 26. Ahold-down chain: guide 27 is integral with base 12 and has a curved.chain-guiding surface 23. The chain-guiding surface 28 is reallythe'topof a groove, as seen in Fig. 2, which receives'theverticallinksof thechain 30; this groove ispartly horizontal and partly inclined upwardly,as shown in Fig. 3. A pair of. spaced cooperating chain guiding fins 29arcalso integral'with base 12 and have upcurvedends 29a, Fig. 3. Chain30 to be pulled by the lift jack has one-end (or a linkintermediateits-ends) engaging a-slot in. the rack bar toe lift 18 (as will beunderstood from the aforesaid patent, hence is not illustrated); Chain30 passes down between the curved face 28 and the pair of chain-guidingpins29, with those of itslinks which are in avertical plane passingbetween the spaced fins 29, while those of. its links which lie in aplane at right angles tothe. vertical pass or slide overthe top surfacesof fins 29. Fig- 3 shows chain 3ilslackened or not under tension; ifchain 30 is tensioned, the upper edges of those of its links which arein the-vertical plane willeontact and slide-along the curved face 23.Apair of aiined bores 31 extend horizontally through base 12; the axisofbores 31 is located above the fins 29 and below the chain-guiding slot28. Bores'31 are not round in cross sectionbut are elongated, orgenerally elliptical, with the major axis of each-bore at an angle-ofabout30 relative to the horizontal. Chainlocking pin 26 is adapted topass through bores 31 and through one of the vertical links of chain 30to lock the chain to the base 12, as when it is desired to disengage thechain from the rackbar. toe lift 18 and yet hold the chain tensioned.Chaindocking pin 26 has a projection or collar 32 fixed-to the shank ofthe pin at a point intermediate its ends which fits inside of bore 31when the pin is in lockingposition to prevent the pin from being,accidentally disengaged, as will be understood'from Fig. 2.

With chain 30 located as shown in. Figs. 1'. and 3, it will exert ahorizontal pull as the lift jack rack bar is moved upwardly. However, ifthe pull of the chain must be at an angle or over round objects, chain30 is removed from the guides 27, 29. Then of course bores 31 are notused to receive the chain-locking pin 26. Instead, a pair of slots 33,34 are provided between the chain guide 27 and socket 11, said slotsbeing on opposite sides of the base 12 and including substantiallyvertical faces or edges 33a, 34a adapted to be contacted by locking pin26 when the latter is inserted in the opening of one of the chain links.tioned relative to bores 31, that is the spacing is such, that whenchain 30 is under tension from the rack bar of the lift jack, lockingpin 26 may be passed through a selected one of the vertical links(sometimes called the edgewise links), either the link between bores 31or the one adjacent slots 33, 34. The operator can select whichever linkis closest to the position of registry with the locking pin, and thusthe chain will scarcely be slackened at all when it is disengaged fromthe rack bar and all of its tension is transmitted through the lockingpin to the base member 12. Thus a close adjustment of chain 30 ispossible. This close adjustment is made even closer by the shape andposition of bores 31 which make it possible for the locking pin toengage an end of the link selected, instead of being passed through theselected link to hold the chain. It will be clear from Fig. 3 that thelower end (the left hand end) of the chain link through which thelocking pin is shown as passing might be in contact with the locking pinif the chain were pulled up a distance equal to about half the overalllength of a single link, and t if this contact took place, the chainwould be locked by the locking pin as effectively as if the pin werepassed through a link as illustrated. Also, Fig. 3 will make it apparentthat if the chain were pulled up about one-fourth of the over-all lengthof one link, the locking pin when laid across the opening between thetwo slots 33, 34 will engage under the edgewise or vertical link at thelower end thereof to hold the chain locked to base 12. In other words,the chain would be held under tension and could not separate itself frombase 12.

While the base 12 could be symmetrically made relative to its socket 11,that is, it could be made exactly the same on the right side of thesocket as on the left (as the parts are viewed in Fig. l), I have shownon the right side a hook 35 which is pivoted to the base by means of abolt 36 and which has a notch 37 and a concavity or seat 38 forreceiving a link of a chain a to anchor base 12 when the latter issubjected to the stresses imposed by the reaction from a tightened chain30. Hook is formed with an integral stop 39 which contacts a cross pin40 fixed to base 12. The pivoted end of hook 35 is curved arcuately, asshown at 41, about pivot bolt 36 as an axis so that said hook may freelyswing clockwise at the parts as viewed in Fig. 3, thus permitting thehook to be swung to release the anchoring chain hooked onto it.

counterclockwise movement of the hook is prevented by the cross pin 40.

Now referring to the form of the invention shown in Figs. 4 and 5, alllike parts are identified by the same reference numerals used in Figs.1, 2 and 3, and these like parts will not be described a second time.The form of Figs. 4 and 5 is distinguished by two advantageous features,viz., an improved anchoring means and an improved conformation of thebottom of base 12.

The improved anchoring means are two integral anchoring flanges and 46,extending horizontally out from base 12a, each flange having a bore 45aor 46:: through which a bolt, spike or the like may be passed to holdthe base 12a rigidly to some firm support. This form of the invention isprovided with three different anchoring means, viz.:

(1) The anchor hook 35;

(2) The anchor lock bolt 36 (which may be engaged by an anchor chain);

(3) Flanges 45, 46.

Now the vertical slot edges 33a, 34a are so posi- Cal There are timeswhen one anchoring means will be preferred to either of the others.

The curvature 47 provided in the bottom of base 12a including flanges45, 46, as shown in Fig. 5, is of importance especially when the pullingimplement is used as a load binder, as the curvature will permit thepulling implement to fit or straddle round or irregular objects.

Fig. 6 shows a base 12b wherein a pair of rotatable chain sheaves 50 areprovided, only one sheave being shown. Each chain sheave is pentagonaland has notches 51 at the angles of the pentagon for receiving the endsof a chain link which straddles or fits over the sheave, as will beunderstood without illustration. The sheaves will rotate as the chainsmeshing with them are tightened by the lift jack, and when the chainsare to be secured to the base 12b, the locking pin will be insertedthrough bores 31 or between the slots 53, only one of the slots beingshown, as both slots are alike.

Obviously a number of changes may be made in tht. described constructionand arrangement of parts, provided such changes are within the scope ofthe appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In combination, a lift jack; a base having a socket in which thelower end of the lift jack snugly fits so that the jack standssubstantially vertically when the base is horizontal; and removablefastening means for securing the lower end of the jack within saidsocket; said base having guiding means for a flexible pulling element.

2. In combination, a lift jack; a base having guiding means for aflexible pulling element; said base also having a socket for receivingthe lower end of the lift jack; said socket and said lower end beingcomplementarily shaped and so constructed and arranged that the liftjack may be turned on its longitudinal axis and may fit into the socketwhatever the angular position of the socket.

3. A base member for lift jacks having socket means on its upper facefor receiving the lower end of a lift jack thereby to provide a stablesupport for the lift jack; said base member having a passageway for achain extending from one end around in a curve upwardly and adjacent thesocket, said passageway including chainguiding surfaces; a cross boreintersecting said passageway; and a chain-locking pin adapted to passinto said cross bore and contact the chain in said passageway.

4. The invention defined in claim 3, wherein the passageway is definedin part by a groove which is horizontal and straight for part of itslength and then curves upwardly, and in part by a pair of spaced finswhich are below said groove and are horizontal for part of their lengthand are curved upwardly for the remainder of their lengths, said finsbeing exactly alike but being on opposite sides of the passageway andbeing spaced apart far enough to permit a vertical chain link to passbetween them, said fins being spaced from the groove far enough topermit a chain link which is at right angles to the above mentionedvertical link to slide or pass over said fins as the chain moves.

5. The invention defined in claim 3, wherein the cross bore is elongatedand is larger than the cross section of the pin, the long axis of thecross bore extending at an angle of about 30 relative to the horizontal.

6. A base member for lift jacks having a socket on its upper face forreceiving the lower end of a lift jack thereby to provide a stablesupport for the lift jack; said base member having a passageway for alink chain extending from one end around in a curve upwardly andadjacent to the socket, said passageway including chain-guidingsurfaces; a cross bore intersecting said passageway; a pair of slotsprovided on the base at the upper end of said passageway; and achain-locking pin adapted to fit in said cross bore or alternatively insaid slots to lock a pulling chain to the base member, said locking pinbeing manipulated by the operator to lock or release the pulling chain.

7. A base member for lift jacks having a socket on its upper face forreceiving the lower end of a lift jack thereby to provide a stablesupport for the lift jack; a chain sheave rotatably mounted on the basemember to turn in a vertical plane which intersects said socket; a crossbore in the base member intersecting the path of a link chain which maybe caused to mesh with said chain sheave; and a chain-locking pinadapted to be inserted in said cross bore.

8. The invention as defined in claim 7, wherein the cross bore iselongated with its long axis directed toward the axis of rotation of thechain sheave and its upper end ending within the pitch circle of thechain sheave.

9. A base member for lift jacks having a socket on its upper face forreceiving the lower end of a lift jack thereby to provide a stablesupport for the lift jack; said base member having a passageway throughwhich a pulling chain may pass; a pair of slots formed on the basemember on either side of the passageway adjacent said socket; and achain-locking pin adapted to lie in said slots transversely to the chainpassageway and adapted to contact the chain to prevent movement thereofin one direction through the passageway.

References Cited in the file of this patent UNITED STATES PATENTS504,127 Ebert Aug. 29, 1893 1,445,430 Dardani Feb. 13, 1923 1,521,764Graver Ian. 6, 1925 1,973,224 Packowicz Sept. 11, 1934 2,639,890 HaubertMay 26, 1953

